| Scholar Name | SAMAR KISHORE |
| Department | Science and Humanities |
| Reseach Area | Polymer Gel Electrolytes |
| Supervisor Name | Dr J J Chaudhari |
| Title | Comparative Performance of Carbonate,TGDME and IONIC liquid based solvents in polymer Gel Electrolyte for application in Supercapacitors |
| Abstract | Gel polymer electrolytes are recognized as effective systems to replace conventional liquid electrolytes for creating safer high-energy-density sodium-based electrochemical devices. This paper aims to investigate the effect of introducing glyme and carbonate-based solvents on the electrochemical behavior of sodium-ion conducting gel polymer electrolytes. The gel polymer electrolytes are fabricated using tetraethylene glycol dimethyl ether (TEGDME) and ethylene carbonate: diethyl carbonate (EC: DEC) as a solvent, sodium trifluromethane sulfonate (NaTf) as salt and a blend of poly(vinylidene fluoride-co- hexafluoropropylene) and poly methyl methacrylate (PVDF-HFP: PMMA) polymers as the matrix. Due to the different nature of glyme and carbonate-based solvents, both the compositions of the electrolyte demonstrate different ion conduction mechanisms, which affect their ionic conductivity. The ionic conductivity values are obtained as 2.4 ? 10?3 and 5.4 ? 10?4 S cm?1 for electrolyte samples containing carbonate and glyme solvents, respectively. The differential scanning calorimetry reveals that the electrolyte membranes maintain gel phase for temperatures < 110?C. X-ray diffraction suggests changes in structural features on adding different molecular solvents, while the Fourier transformed infra-red spectroscopy indicates significant interactions among the constituents of electrolytes. The fabricated electrolytes of this report can be employed in next-generation electrochemical devices. |